title: 3-D characterization of weathered building limestones by high resolution synchrotron X-ray microtomography.
abstract: Understanding the weathering processes of building stones and more generally of their transfer properties requires detailed knowledge of the porosity characteristics. This study aims at analyzing three-dimensional images obtained by X-ray microtomography of building stones. In order to validate these new results a weathered limestone previously characterised (Rozenbaum et al., 2007) by two-dimensional image analysis was selected. The 3-D images were analysed by a set of mathematical tools that enable the description of the pore and solid phase distribution. Results show that 3-D image analysis is a powerful technique to characterise the morphological, structural and topological differences due to weathering. The paper also discusses criteria for mathematically determining whether a stone is weathered or not.
authors.affiliation: Institut des Sciences de la Terre d'Orléans, UMR6113 CNRS/Université d'Orléans, 1A, rue de la Férollerie, 45071 Orléans Cedex 2, France. rozenbaum@cnrs-orleans.fr
authors.forename: O
authors.initials: O
authors.lastname: Rozenbaum
mesh_terms: D002119:Calcium Carbonate / Q000737:chemistry*; D003252:Construction Materials / Q000032:analysis*; D021621:Imaging, Three-Dimensional; D016062:Porosity; D017356:Synchrotrons; D014887:Weather; D055114:X-Ray Microtomography
chemical_list: D002119:Calcium Carbonate